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102 lines
2.2 KiB
102 lines
2.2 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/iio/adc/adi,ad7949.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Analog Devices AD7949/AD7682/AD7689 analog to digital converters |
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maintainers: |
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- Charles-Antoine Couret <[email protected]> |
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description: | |
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Specifications on the converters can be found at: |
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AD7949: |
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf |
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AD7682/AD7698: |
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7682_7689.pdf |
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properties: |
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compatible: |
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enum: |
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- adi,ad7682 |
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- adi,ad7689 |
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- adi,ad7949 |
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reg: |
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maxItems: 1 |
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vrefin-supply: |
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description: |
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Buffered ADC reference voltage supply. |
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vref-supply: |
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description: |
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Unbuffered ADC reference voltage supply. |
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adi,internal-ref-microvolt: |
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description: | |
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Internal reference voltage selection in microvolts. |
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If no internal reference is specified, the channel will default to the |
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external reference defined by vrefin-supply (or vref-supply). |
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vrefin-supply will take precedence over vref-supply if both are defined. |
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If no supplies are defined, the reference selection will default to |
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4096mV internal reference. |
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enum: [2500000, 4096000] |
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default: 4096000 |
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spi-max-frequency: true |
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'#io-channel-cells': |
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const: 1 |
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'#address-cells': |
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const: 1 |
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'#size-cells': |
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const: 0 |
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required: |
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- compatible |
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- reg |
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additionalProperties: false |
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examples: |
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- | |
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spi { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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adc@0 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "adi,ad7949"; |
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reg = <0>; |
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vref-supply = <&vdd_supply>; |
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}; |
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adc@1 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "adi,ad7949"; |
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reg = <1>; |
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vrefin-supply = <&vdd_supply>; |
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}; |
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adc@2 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "adi,ad7949"; |
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reg = <2>; |
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adi,internal-ref-microvolt = <4096000>; |
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}; |
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}; |
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...
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